Terni climate — normals and trends
Terni (Italy) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 12.1 °C and it receives 986 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (21.8 °C on average) and the coldest is January (3.3 °C). Rainfall peaks in November.
Terni averages 45 frost days, 19 hot days (≥ 30 °C) and 125 rainy days per year.
Terni has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 62 to 28 per year over the period.
The hottest day of the period reached 38.1 °C (on 2 August 2017) and the coldest -20.4 °C (on 23 January 1945).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
TerniUmbria
- coords
- 42.56°, 12.64°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.1°C
Average daily high
17.0°C
Average daily low
7.8°C
Annual rainfall
986mm
Sunshine / day
9.8h
Mean relative humidity
74%
Average peak wind
10.2km/h
Seasonal range
18.5°C
Frost days (< 0 °C)
45 d/yr
Hot days (≥ 30 °C)
19 d/yr
Rainy days (≥ 1 mm)
125 d/yr
Annual snowfall
39.6 cm
Average feels-like high
15.8 °C
Average feels-like low
6.1 °C
Average peak gust
34.5 km/h
Tropical nights (≥ 20 °C)
4 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.48 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
38.1 °C
2 August 2017
Coldest day
-20.4 °C
23 January 1945
Wettest day
70 mm
21 August 1977
Windiest day
29.7 km/h
29 October 2018
Strongest gust
122.8 km/h
29 October 2018
Hottest feels-like
39.8 °C
11 August 2024
Coldest feels-like
-25.0 °C
23 January 1945
Snowiest day
31.4 cm
11 March 1956
Sunniest day
14.5 h
29 June 2019
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 10.1 °C | +2.9 °C | 60 mm | -21 mm |
| Feb | 11.3 °C | +2.6 °C | 64 mm | -27 mm |
| Mar | 13.8 °C | +2.1 °C | 140 mm | +48 mm |
| Apr | 17.8 °C | +2.6 °C | 127 mm | +29 mm |
| May | 20.5 °C | +0.9 °C | 76 mm | -8 mm |
| Jun | 30.2 °C | +6.2 °C | 12 mm | -45 mm |
| Jul | 29.6 °C | +2.0 °C | 33 mm | +2 mm |
| Aug | 29.0 °C | +1.3 °C | 88 mm | +47 mm |
| Sep | 24.6 °C | +1.4 °C | 98 mm | +24 mm |
| Oct | 18.6 °C | +0.6 °C | 85 mm | -18 mm |
| Nov | 13.8 °C | +1.6 °C | 112 mm | -15 mm |
| Dec | 10.7 °C | +2.4 °C | 28 mm | -77 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Terni?
Terni has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 12.1 °C and it receives 986 mm of precipitation per year.
What is the hottest day ever recorded in Terni?
The hottest day measured in Terni between 1940 and 2025 was 2 August 2017, reaching 38.1 °C.
What is the coldest day in Terni?
The coldest day measured in Terni between 1940 and 2025 was 23 January 1945, at -20.4 °C.
Does it snow in Terni?
Yes. Terni gets on average 39.6 cm of snow per year and has around 45 frost days.
Has the climate of Terni warmed?
Yes: Terni warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Terni?
The wettest day measured in Terni between 1940 and 2025 was 21 August 1977, with 70 mm of rain in 24 hours.
What was the windiest day in Terni?
The windiest day measured in Terni between 1940 and 2025 was 29 October 2018, with winds reaching 29.7 km/h.
What is the warmest month in Terni?
The warmest month in Terni is July (21.8 °C on average); the coldest is January (3.3 °C).
How much does it rain in Terni?
Terni receives on average 986 mm of precipitation per year, spread over about 125 rainy days.
Is it sunny in Terni?
Terni gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Terni?
The heaviest 24-hour snowfall measured in Terni between 1940 and 2025 was 11 March 1956, with 31.4 cm.
Are there tropical nights in Terni?
Yes: Terni has on average 4 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Terni?
In Terni, between 1940 and 2025, the highest apparent temperature reached 39.8 °C on 11 August 2024, and the lowest was -25.0 °C on 23 January 1945.
Compare Terni with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Terni